EP 2885458 A4 20160420 - METHOD AND INTERMEDIATE FOR THE PRODUCTION OF HIGHLY REFINED OR MICROFIBRILLATED CELLULOSE
Title (en)
METHOD AND INTERMEDIATE FOR THE PRODUCTION OF HIGHLY REFINED OR MICROFIBRILLATED CELLULOSE
Title (de)
VERFAHREN UND ZWISCHENPRODUKTE ZUR HERSTELLUNG VON HOCHRAFFINIERTER ODER MIKROFIBRILLIERTE CELLULOSE
Title (fr)
PROCÉDÉ ET INTERMÉDIAIRE POUR LA PRODUCTION DE CELLULOSE HAUTEMENT RAFFINÉE OU MICROFIBRILLÉE
Publication
Application
Priority
- FI 20125864 A 20120820
- FI 2013050805 W 20130816
Abstract (en)
[origin: WO2014029909A1] The invention concerns a method for the production of highly refined or micro- fibrillated cellulose (MFC), comprising the steps of treating cellulosic fibres to remove at least a major part of the primary wall of the fibres, drying the treated fibres, rewetting the treated fibres, and disintegrating the wetted fibres by me- chanical means to obtain the final product. The invention further concerns dried cellulosic pulp as an intermediate product of the method, having an aver- age fibre length of at least 0.4 mm, while less than 50 % of the primary wall material of natural untreated fibres is left in the intermediate product. Instead of transporting large amounts of dilute MFC dispersion the invention enables transport of the dry intermediate product to the MFC end user, who would complete the process by turning the intermediate product to final MFC by use of standard disintegrating devices.
IPC 8 full level
C08L 1/02 (2006.01); D21B 1/34 (2006.01); D21B 1/38 (2006.01); D21C 9/00 (2006.01); D21C 9/18 (2006.01); D21H 11/18 (2006.01)
CPC (source: EP FI US)
C08L 1/02 (2013.01 - EP FI US); C12P 19/00 (2013.01 - FI); C12P 19/04 (2013.01 - EP FI US); C12P 19/14 (2013.01 - EP US); D21B 1/34 (2013.01 - FI); D21C 5/00 (2013.01 - FI); D21C 5/005 (2013.01 - EP US); D21C 9/002 (2013.01 - EP FI US); D21C 9/005 (2013.01 - EP FI US); D21C 9/007 (2013.01 - EP FI US); D21C 9/18 (2013.01 - FI); D21H 11/18 (2013.01 - EP FI US); D21H 17/00 (2013.01 - FI); D21H 17/005 (2013.01 - US); D21H 17/675 (2013.01 - FI US); D21H 17/74 (2013.01 - FI US); C08L 2205/16 (2013.01 - EP US); D21C 9/18 (2013.01 - EP US)
Citation (search report)
- [X] DE 2628221 A1 19780105 - THIELE HEINRICH
- See references of WO 2014029909A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2014029909 A1 20140227; BR 112015003641 A2 20170704; CA 2881332 A1 20140227; CA 2881332 C 20220621; CN 104619913 A 20150513; CN 104619913 B 20170315; EP 2885458 A1 20150624; EP 2885458 A4 20160420; EP 2885458 B1 20180425; FI 127111 B 20171115; FI 20125864 A 20140221; JP 2015531033 A 20151029; JP 6345666 B2 20180620; NO 2885458 T3 20180922; PL 2885458 T3 20180831; US 10900169 B2 20210126; US 2015218757 A1 20150806; ZA 201501888 B 20160629
DOCDB simple family (application)
FI 2013050805 W 20130816; BR 112015003641 A 20130816; CA 2881332 A 20130816; CN 201380043546 A 20130816; EP 13830431 A 20130816; FI 20125864 A 20120820; JP 2015527949 A 20130816; NO 13830431 A 20130816; PL 13830431 T 20130816; US 201314421708 A 20130816; ZA 201501888 A 20150319